CN111917470B - Underwater visible light communication transceiver module - Google Patents
Underwater visible light communication transceiver module Download PDFInfo
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- CN111917470B CN111917470B CN202010808931.XA CN202010808931A CN111917470B CN 111917470 B CN111917470 B CN 111917470B CN 202010808931 A CN202010808931 A CN 202010808931A CN 111917470 B CN111917470 B CN 111917470B
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- transceiver module
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
- H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
Abstract
The invention is suitable for the technical field of visible light communication, and provides an underwater visible light communication transceiver module, which comprises: the casing, the at least one end of casing is provided with at least a set of visible light transceiver module under water, visible light transceiver module under water includes receiving unit and visible light transmitting unit under water, the light path of receiving unit and visible light transmitting unit under water all faces under the visible light the casing is outside and mutually independent. The embodiment of the invention can respectively process the signal transmission of different optical paths by mutually independently using the receiving unit and the sending unit, namely, can simultaneously send and receive different optical signals and simultaneously complete the sending and receiving of signals of different data; the underwater visible light communication transceiver module has strong adaptability, can be arranged according to the requirements of different scenes, can adapt to various underwater communication scenes, can change the optical path angle of visible light communication, and can expand the communication distance in a multi-device series connection mode.
Description
Technical Field
The invention belongs to the field of visible light communication, and particularly relates to an underwater visible light communication transceiver module.
Background
The visible light communication is a novel information technology for realizing wireless transmission by utilizing the high-speed on-off response characteristic of the LED, and has the technical advantages of high speed, no electromagnetic radiation, high density, low cost, rich spectrum and high confidentiality. Especially in 12 months in 2015, through test and certification of the ministry of industry and trust in china, the key technical research of the visible light communication system in china is a major breakthrough, the real-time communication rate is improved to 50Gbps, and the high-speed advantage of visible light in the communication field is shown again.
Existing underwater communications are more or more wired transmission because radio waves cannot propagate underwater. Visible light can be transmitted underwater, so visible light communication can also be applied to the situation that the traditional wireless transmission electromagnetic wave signals cannot be transmitted underwater. Influenced by many aspects, the effective distance of the existing underwater visible light transmission is short, the problem of long-distance data transmission is still difficult to solve, and certain requirements are also provided for the transmittance of a water body. Therefore, the adaptability of the existing underwater visible light communication is still insufficient, and a solution is urgently needed.
Disclosure of Invention
In view of this, the embodiment of the present invention provides an underwater visible light communication transceiver module, so that the adaptability of visible light in underwater communication is stronger, and the transceiver module can be arranged and designed according to the requirements of different scenes.
A first aspect of an embodiment of the present invention provides an underwater visible light communication transceiver module, including: the casing, the at least one end of casing is provided with at least a set of visible light transceiver module under water, visible light transceiver module under water includes receiving unit and visible light transmitting unit under water, the light path of receiving unit and visible light transmitting unit under water all faces under the visible light the casing is outside and mutually independent.
The receiving unit and the transmitting unit are independent from each other, and can respectively process the signal transmission of different optical paths, namely, different optical signals can be simultaneously transmitted and received, and the signal transmission and the signal reception of different data can be simultaneously completed.
When only one group of visible light underwater transceiver modules is available, visible light communication can be performed on one side, and communication can be performed on the other sides through wired transmission or other modes, so that the method is more suitable for scenes of visible light single-side communication, such as experimental scenes for testing and comparing differences between visible light communication and other communication modes;
when a communication scene needs a longer distance or a more complex situation, visible light underwater transceiver modules can be arranged on multiple sides, and the modules on all sides can be communicated with each other in the shell, so that the whole underwater visible light communication transceiver module can effectively transmit visible light signals on one side to the other side, can transmit the visible light signals on the opposite sides of a straight line, and can also transmit the visible light signals by changing the angle of an optical path, for example, when the visible light underwater transceiver modules on two right-angle sides are arranged on the shell, the optical paths of the two modules form an included angle of 90 degrees, the corresponding signal transmission channel can realize that the transmission angle of the visible light changes by 90 degrees, and the defect that the optical communication can only be transmitted in a straight line due to the fact that light can only be transmitted in a straight line can be overcome. Similarly, the visible light underwater transceiver modules arranged in different directions of the shell can also realize the visible light communication angle change at other angles.
When a plurality of underwater visible light communication transceiver modules form a channel, the effect of a visible light communication link can be achieved, the communication distance is infinitely extended, the function similar to that of communication relay equipment is realized by a single underwater visible light communication transceiver module, and the application scene is more diversified.
Therefore, the above manner can show that the underwater visible light communication transceiver module of the invention has strong adaptability, can be arranged according to the requirements of different scenes, can adapt to various underwater communication scenes, can change the light path angle of visible light communication, and can expand the communication distance in a manner of connecting multiple devices in series.
In one embodiment, the visible-light underwater receiving unit includes a receiving optical system, a photoelectric conversion mechanism, and a receiving circuit, which are arranged in this order in a photoelectric transmission direction, wherein:
the receiving optical system is used for receiving an optical signal, the photoelectric conversion mechanism is used for converting the optical signal into an electrical signal, and the receiving circuit is used for outputting the electrical signal in a communication data format;
the visible light underwater transmitting unit comprises a transmitting circuit, a transmitting light source and a collimating optical system which are sequentially arranged along the photoelectric transmission direction, wherein:
the transmitting circuit is used for acquiring communication data and analyzing the communication data into electric signals, the transmitting light source is used for converting the electric signals into optical signals, and the collimating optical system is used for releasing the optical signals by collimating light.
In one embodiment, the visible light underwater transceiver module further comprises a data processor, a first data input end of the data processor is connected with the output end of the receiving circuit, and a second data output end of the data processor is connected with the input end of the transmitting circuit.
In one embodiment, each end of the housing is provided with a set of the visible underwater transceiver modules, and the two sets of the visible underwater transceiver modules communicate via a transmission channel in the housing.
In one embodiment, the housing is formed by at least two separable sub-bodies, wherein a group of the visible light underwater transceiver modules is respectively arranged in the two sub-bodies at the end part.
In one embodiment, the contact surfaces of two adjacent sub-bodies are provided with a structure part, wherein the structure part of one sub-body is a male head, the structure part of the other sub-body is a corresponding female head, and the structure parts and the female heads are matched to complete the structure;
the transmission channel in the housing is a wireless communication transmission channel.
In one embodiment, the female head is provided with a magnetic attraction device, and the male head is fixedly provided with a magnetizer.
In one embodiment, a waterproof bin is arranged in the shell and comprises a communication chamber and a power supply chamber, the visible light underwater transceiver module is installed in the communication chamber, a power supply is installed in the power supply chamber, and the power supply supplies power to the visible light underwater transceiver module;
the communication chamber is located at the end of the shell, and the chamber wall is made of light-transmitting materials.
In one embodiment, the communication indoor wall is provided with a tripod head support, and the visible light underwater transceiver module is fixedly mounted on the tripod head support;
the holder support is provided with a horizontal rotating mechanism and a vertical rotating mechanism and is used for horizontally rotating and vertically rotating the visible light underwater transceiving module.
In one embodiment, an image acquisition device is further installed in the communication chamber and used for acquiring images outside the shell.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the embodiment of the invention can respectively process the signal transmission of different optical paths by mutually independently using the receiving unit and the sending unit, namely, can simultaneously send and receive different optical signals and simultaneously complete the sending and receiving of signals of different data; the underwater visible light communication transceiver module has strong adaptability, can be arranged according to the requirements of different scenes, can adapt to various underwater communication scenes, can change the optical path angle of visible light communication, and can expand the communication distance in a multi-device series connection mode.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an underwater visible light communication transceiver module according to an embodiment of the present invention;
fig. 2 is a rear view of an underwater visible light communication transceiver module according to a first embodiment of the present invention;
fig. 3 is a cross-sectional view of an underwater visible light communication transceiver module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an underwater visible light communication transceiver module according to a second embodiment of the present invention;
fig. 5 is a cross-sectional view of an underwater visible light communication transceiver module according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of an underwater visible light communication transceiver module according to a third embodiment of the present invention;
fig. 7 is a schematic view of a configuration part in an underwater visible light communication transceiver module according to a third embodiment of the present invention;
fig. 8 is a cross-sectional view of an underwater visible light communication transceiver module provided in a third embodiment of the present invention;
fig. 9 is a schematic structural diagram of an underwater visible light communication transceiver module according to a fourth embodiment of the present invention;
fig. 10 is a schematic view of a configuration part in an underwater visible light communication transceiver module according to a fourth embodiment of the present invention;
fig. 11 is a cross-sectional view of an underwater visible light communication transceiver module according to a fourth embodiment of the present invention;
fig. 12 is a schematic structural diagram of an underwater visible light communication transceiver module according to a fifth embodiment of the present invention;
fig. 13 is a cross-sectional view of an underwater visible light communication transceiver module according to a fifth embodiment of the present invention;
fig. 14 is a communication diagram of a visible light underwater transceiver module according to an embodiment of the present invention.
Detailed Description
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
The embodiment of the invention adopts the following structure:
the first embodiment is as follows:
referring to fig. 1, the present embodiment provides an underwater visible light communication transceiver module, including: the underwater communication device comprises a shell 100, wherein one end of the shell 100 is provided with a group of visible light underwater transceiver modules 200, the other end of the shell 100 is connected with a remote communication device through a cable 300, and the visible light underwater transceiver modules 200 are electrically connected with the cable 300.
As can be seen from the figure, the head of the casing 100 of the present embodiment is in the shape of a bullet, the tail of the casing is provided with a tail wing 101, the outer wall of the casing 100 is provided with four sets of drainage channels 102 communicated with the tail end of the casing 100, and each set of drainage channels 102 is internally provided with a set of underwater propulsion devices 103, as shown in fig. 2. The structure of the casing 100 is beneficial to underwater operation, and the underwater propulsion device 103 can be operated to work through the traveling controller only by putting the underwater visible light communication transceiver module of the embodiment into water, so that the underwater visible light communication transceiver module can travel to any destination.
As shown in fig. 3, in the embodiment, a waterproof chamber 110 is disposed in the casing 100, the waterproof chamber 110 includes a communication chamber 111 and a power supply chamber 112, the communication chamber 111 is located at a head portion of the casing 100, and a chamber wall of the head portion is made of a light-transmitting material.
The visible light underwater transceiver module 200 is installed in the communication chamber 111, the power supply 400 is installed in the power supply chamber 112, and the power supply 400 supplies power to the visible light underwater transceiver module 200 and the underwater propulsion device 103; the cable 300 is electrically connected to the visible-light underwater transceiver module 200 within the waterproof compartment 110.
Preferably, in this embodiment, in order to facilitate the optical path of the visible light underwater transceiver module 200 to be adjustable, the inner wall of the communication chamber 111 is provided with a pan-tilt support 500, and the visible light underwater transceiver module 200 is fixedly mounted on the pan-tilt support 500;
the orientation angle of the visible light underwater transceiver module 200 is adjusted by the optical path adjustment, the specific adjustment mode can refer to the rotation principle of the existing camera device, and the equivalent setting of the rotation structure is as follows: the pan-tilt support 500 is provided with a horizontal rotation mechanism and a vertical rotation mechanism, which are respectively used for horizontally rotating and vertically rotating the visible light underwater transceiver module 200. The specific design of the horizontal rotation and the vertical rotation is disclosed in a large number of publications and is not described in detail herein.
The underwater visible light transceiver module 200 includes a visible light underwater receiving unit 210 and a visible light underwater transmitting unit 220, and light paths of the visible light underwater receiving unit 210 and the visible light underwater transmitting unit 220 face the outside of the housing 100 and are independent of each other.
Referring to fig. 14, the visible-light underwater receiving unit 210 includes a receiving optical system 211, a photoelectric conversion mechanism 212, and a receiving circuit 213, which are arranged in this order in the photoelectric transmission direction, wherein:
the receiving optical system 211 is used for receiving optical signals, and mainly converges light reaching a receiving end, and the converged light impinges on a receiving photodiode (i.e., the photoelectric conversion mechanism 212) as much as possible, so that under the same underwater absorption and scattering condition, the loss of light beam energy can be reduced, and the effective transmission distance is longer. The receiving optical system 211 is generally composed of a circular optical glass convex lens and a properly focused receiving structure.
The photoelectric conversion mechanism 212 is used to convert an optical signal into an electrical signal, and a common photoelectric conversion mechanism 212 is a photodiode, and can be configured as a single photodiode or a photodiode array as required to meet communication conditions.
The receiving circuit 213 is used for outputting the electrical signals in a communication data format, and mainly comprises a signal receiving amplifying circuit, an STM32 processing circuit and a power supply circuit, wherein the signal receiving amplifying circuit is used for amplifying weak optical and electrical signals so as to facilitate the effectiveness of subsequent data processing, the STM32 processing circuit receives and processes the amplified digital signals, and then transmits data with remote communication equipment through the cable 300, and the power supply circuit is connected with the power supply 400 and supplies power to the signal receiving amplifying circuit and the STM32 processing circuit.
The visible light underwater transmitting unit 220 includes a transmitting circuit 221, a transmitting light source 222, and a collimating optical system 223 that are sequentially arranged along a photoelectric transmission direction, wherein:
the transmitting circuit 221 is configured to acquire communication data and analyze the communication data into an electrical signal, and mainly includes an LED driving circuit, an STM32 processing circuit, and a power supply circuit, where the STM32 processing circuit and the power supply circuit may be shared with the STM32 processing circuit and the power supply circuit of the receiving circuit 213, and only need to be correspondingly provided as a part of the LED driving circuit, and the LED driving circuit converts the data signal into a form that can be processed by an LED light source.
The light emitting source 222 is used for converting the electrical signal into an optical signal, and is typically a light emitting diode, and as such, may be a single light emitting diode or an array of light emitting diodes as required to satisfy the communication condition.
The collimating optical system 223 is used to release the optical signal as collimated light, so as to reduce the divergence angle of the light beam in free space transmission and to transmit the light beam in parallel light in free space as much as possible. The collimating optical system 223 is generally composed of a circular optical glass convex lens and an emitting structure with a proper focal length.
The data processor included in the visible light underwater transceiver module 200 may be the STM32 processor of the STM32 processing circuit described above, or may be connected to another processor. If an STM32 processor is adopted, the LED driving circuit and the signal receiving and amplifying circuit are connected correspondingly only according to the transmitting circuit 221 and the receiving circuit 213; if a separate processor is connected, a first data input terminal of the data processor is connected to the output terminal of the receiving circuit 213, a second data output terminal of the data processor is connected to the input terminal of the transmitting circuit 221, and the first data output terminal and the second data input terminal are connected to the cable 300.
Through the above design, the present embodiment can realize the receiving function of receiving the visible light signal by the visible light underwater receiving unit 210 and outputting the visible light signal to the far end through the cable 300, and can also realize the transmitting function of transmitting the visible light signal by the visible light underwater transmitting unit 220 after the cable 300 receives data from the far end.
Example two:
referring to fig. 4, the present embodiment provides an underwater visible light communication transceiver module, including: the two ends of the casing 100 are provided with a set of visible light underwater transceiver modules 200, and the two sets of visible light underwater transceiver modules 200 communicate via a transmission channel in the casing 100, where the transmission channel may be wired transmission or wireless transmission. As can be seen from the figure, both ends of the present embodiment are bullet-shaped, and the chamber walls of the ends are made of transparent material.
As shown in fig. 5, the internal structure of the present embodiment is similar to that of the first embodiment, and a waterproof chamber 110 is provided in the housing 100, except that the waterproof chamber 110 includes a power supply chamber 112 and two communication chambers 111, and the two communication chambers 111 are located at both ends of the housing 100.
Each communication chamber 111 is provided with a group of visible light underwater transceiver modules 200, and the power supply chamber 112 is provided with a power supply 400, wherein the power supply 400 supplies power to the visible light underwater transceiver modules 200.
Preferably, in the present embodiment, similarly to the first embodiment, the cradle head support 500 is disposed on the inner wall of the communication chamber 111, and the visible light underwater transceiver module 200 is fixedly mounted on the cradle head support 500;
the pan/tilt support 500 is provided with a horizontal rotation mechanism 510 and a vertical rotation mechanism 520 for horizontally rotating and vertically rotating the visible light underwater transceiving module 200, respectively.
The two sets of visible light underwater transceiver modules 200 in this embodiment have the same design, and each include a visible light underwater receiving unit 210 and a visible light underwater transmitting unit 220, and optical paths of the visible light underwater receiving unit 210 and the visible light underwater transmitting unit 220 face the outside of the housing 100 and are independent of each other.
The visible-light underwater receiving unit 210 includes a receiving optical system 211, a photoelectric conversion mechanism 212, and a receiving circuit 213, which are arranged in this order in the photoelectric transmission direction, wherein:
the receiving optical system 211 is used for receiving optical signals, and mainly converges light reaching a receiving end, and the converged light impinges on a receiving photodiode (i.e., the photoelectric conversion mechanism 212) as much as possible, so that under the same underwater absorption and scattering condition, the loss of light beam energy can be reduced, and the effective transmission distance is longer. The receiving optical system 211 is generally composed of a circular optical glass convex lens and a properly focused receiving structure.
The photoelectric conversion mechanism 212 is used to convert an optical signal into an electrical signal, and a common photoelectric conversion mechanism 212 is a photodiode, and can be configured as a single photodiode or a photodiode array as required to meet communication conditions.
The receiving circuit 213 is used for outputting the electrical signals in a communication data format, and mainly comprises a signal receiving amplifying circuit, an STM32 processing circuit and a power supply circuit, wherein the signal receiving amplifying circuit is used for amplifying weak optical and electrical signals so as to facilitate the effectiveness of subsequent data processing, the STM32 processing circuit receives and processes the amplified digital signals, and then transmits data with remote communication equipment through the cable 300, and the power supply circuit is connected with the power supply 400 and supplies power to the signal receiving amplifying circuit and the STM32 processing circuit.
The visible light underwater transmitting unit 220 includes a transmitting circuit 221, a transmitting light source 222, and a collimating optical system 223 that are sequentially arranged along a photoelectric transmission direction, wherein:
the transmitting circuit 221 is configured to acquire communication data and analyze the communication data into an electrical signal, and mainly includes an LED driving circuit, an STM32 processing circuit, and a power supply circuit, where the STM32 processing circuit and the power supply circuit may be shared with the STM32 processing circuit and the power supply circuit of the receiving circuit 213, and only need to be correspondingly provided as a part of the LED driving circuit, and the LED driving circuit converts the data signal into a form that can be processed by an LED light source.
The light emitting source 222 is used for converting the electrical signal into an optical signal, and is typically a light emitting diode, and as such, may be a single light emitting diode or an array of light emitting diodes as required to satisfy the communication condition.
The collimating optical system 223 is used to release the optical signal as collimated light, so as to reduce the divergence angle of the light beam in free space transmission and to transmit the light beam in parallel light in free space as much as possible. The collimating optical system 223 is generally composed of a circular optical glass convex lens and an emitting structure with a proper focal length.
The group of visible light underwater transceiver modules 200 further includes a data processor, a first data input end of the data processor is connected to an output end of the receiving circuit 213 of the first visible light underwater transceiver module, a first data output end of the data processor is connected to an input end of the transmitting circuit 221 of the second visible light underwater transceiver module, a second data output end of the data processor is connected to an input end of the transmitting circuit 221 of the first visible light underwater transceiver module, and a second data input end of the data processor is connected to an output end of the receiving circuit 213 of the second visible light underwater transceiver module.
Through the above design, in this embodiment, the first visible light underwater transceiver module on one side can receive the visible light signal through the visible light underwater receiving unit 210, the internal communication is output to the second visible light underwater transceiver module on the other side, and the visible light underwater transmitter unit 220 of this module transmits the visible light signal to form the transmission function of visible light communication.
Example three:
referring to fig. 6, the present embodiment provides an underwater visible light communication transceiver module, including: the housing 100, the housing 100 is formed by two separable sub-bodies 120, and a set of visible light underwater transceiver modules 200 is respectively disposed at the end of the two sub-bodies 120. As can be seen from fig. 6, the two sub-bodies 120 of the present embodiment have bullet-shaped end portions, and the chamber walls of the end portions are made of transparent material.
As shown in fig. 6 and 7, the contact surfaces of the two sub-bodies 120 are provided with a structure part, wherein the structure part of one sub-body 120 is a male head 121, and the structure part of the other sub-body 120 is a corresponding female head 122, and the two parts are matched to complete the structure;
since the housing 100 is a structure capable of separating two sub-bodies 120, the communication mode between the sub-bodies is not convenient for wired transmission, so the transmission channel in the housing 100 is a wireless communication transmission channel, and the contact surfaces of the two sub-bodies 120 are provided with communication holes 123, so that data communication can be performed after the two sub-bodies are assembled.
Preferably, the assembly method in this embodiment is magnetic assembly, the female head 122 is provided with a magnetic device 124, the male head 121 is fixedly installed with a magnetizer 125, when the magnetic device 124 is powered on to work, the female head 122 generates magnetic attraction to attract the magnetizer 125 in the male head 121, and finally the male head 121 and the female head 122 are matched to complete the assembly.
The magnetic attraction device 124 can be a combination of a motor connected with a rotating magnet, and when the motor works electrically, the rotating magnet obtains magnetic force along with rotation, thereby attracting magnetic conductors such as iron cores.
As shown in fig. 8, the internal structure of the single sub-body 120 of the present embodiment is similar to the housing 100 of the first embodiment, a waterproof chamber 110 is disposed in each sub-body 120, the waterproof chamber 110 includes a communication chamber 111 and a power supply chamber 112, and the communication chamber 111 is located at an end of the sub-body 120.
Each communication chamber 111 is provided with a group of visible light underwater transceiver modules 200, the power supply chamber 112 is provided with a power supply 400, and the power supply 400 supplies power to the visible light underwater transceiver modules 200 and the magnetic attraction device 124.
Preferably, in the present embodiment, similarly to the first embodiment, the cradle head support 500 is disposed on the inner wall of the communication chamber 111, and the visible light underwater transceiver module 200 is fixedly mounted on the cradle head support 500;
the pan/tilt support 500 is provided with a horizontal rotation mechanism 510 and a vertical rotation mechanism 520 for horizontally rotating and vertically rotating the visible light underwater transceiving module 200, respectively.
The two sets of visible light underwater transceiver modules 200 in this embodiment have the same design, and each include a visible light underwater receiving unit 210 and a visible light underwater transmitting unit 220, and optical paths of the visible light underwater receiving unit 210 and the visible light underwater transmitting unit 220 face the outside of the housing 100 and are independent of each other.
The visible-light underwater receiving unit 210 includes a receiving optical system 211, a photoelectric conversion mechanism 212, and a receiving circuit 213, which are arranged in this order in the photoelectric transmission direction, wherein:
the receiving optical system 211 is used for receiving optical signals, and mainly converges light reaching a receiving end, and the converged light impinges on a receiving photodiode (i.e., the photoelectric conversion mechanism 212) as much as possible, so that under the same underwater absorption and scattering condition, the loss of light beam energy can be reduced, and the effective transmission distance is longer. The receiving optical system 211 is generally composed of a circular optical glass convex lens and a properly focused receiving structure.
The photoelectric conversion mechanism 212 is used to convert an optical signal into an electrical signal, and a common photoelectric conversion mechanism 212 is a photodiode, and can be configured as a single photodiode or a photodiode array as required to meet communication conditions.
The receiving circuit 213 is used for outputting the electrical signals in a communication data format, and mainly comprises a signal receiving amplifying circuit, an STM32 processing circuit and a power supply circuit, wherein the signal receiving amplifying circuit is used for amplifying weak optical and electrical signals so as to facilitate the effectiveness of subsequent data processing, the STM32 processing circuit receives and processes the amplified digital signals, and then transmits data with remote communication equipment through the cable 300, and the power supply circuit is connected with the power supply 400 and supplies power to the signal receiving amplifying circuit and the STM32 processing circuit.
The visible light underwater transmitting unit 220 includes a transmitting circuit 221, a transmitting light source 222, and a collimating optical system 223 that are sequentially arranged along a photoelectric transmission direction, wherein:
the transmitting circuit 221 is configured to acquire communication data and analyze the communication data into an electrical signal, and mainly includes an LED driving circuit, an STM32 processing circuit, and a power supply circuit, where the STM32 processing circuit and the power supply circuit may be shared with the STM32 processing circuit and the power supply circuit of the receiving circuit 213, and only need to be correspondingly provided as a part of the LED driving circuit, and the LED driving circuit converts the data signal into a form that can be processed by an LED light source.
The light emitting source 222 is used for converting the electrical signal into an optical signal, and is typically a light emitting diode, and as such, may be a single light emitting diode or an array of light emitting diodes as required to satisfy the communication condition.
The collimating optical system 223 is used to release the optical signal as collimated light, so as to reduce the divergence angle of the light beam in free space transmission and to transmit the light beam in parallel light in free space as much as possible. The collimating optical system 223 is generally composed of a circular optical glass convex lens and an emitting structure with a proper focal length.
Each set of visible light underwater transceiver module 200 is further provided with a wireless communication unit for wireless communication between the two.
Through the design, this embodiment can be in separation and combination under water, each daughter 120 can both realize the visible light communication function as in embodiment one alone during the separation, can realize the function as in embodiment two during the combination again, receive the visible light signal by the visible light underwater receiving unit 210 of one side, intercom exports the visible light underwater transceiver module of opposite side, send the visible light signal by the visible light underwater sending unit 220 of this module again, form visible light communication's transfer function, when a plurality of visible light underwater transceiver modules form the route, very big extension communication distance, also can deal with more scene demands.
It is anticipated that a plurality of cylindrical sub-bodies without containing visible light underwater transceiver modules may be connected between the two sub-bodies 120 of the present embodiment to extend the length of the housing 100.
Example four:
referring to fig. 9, it can be seen that the present embodiment combines the structure of the underwater movement of the housing 100 in the first embodiment and the structure of the sub-body 120 in the third embodiment, which are as follows:
the embodiment provides an underwater visible light communication transceiver module, including: the housing 100, the housing 100 is formed by two separable sub-bodies 120, and a set of visible light underwater transceiver modules 200 is respectively disposed at the end of the two sub-bodies 120. In this embodiment, the two sub-bodies 120 have bullet-shaped end portions, and the chamber walls of the end portions are made of transparent material.
The tail part of each sub-body 120 is provided with a tail wing 101, meanwhile, the outer wall of each sub-body 120 is provided with four groups of drainage channels 102 communicated with the tail end of the shell 100, different from the design that in the first embodiment, each group of drainage channels 102 is internally provided with a group of underwater propulsion devices 103, in the embodiment, the sub-bodies can be constructed and assembled to work, so that two groups of drainage channels 102 on the opposite sides are selected to be combined, if the upper side and the lower side are combined, and the left side and the right side are combined, each sub-body 120 is provided with two drainage channel 102 combinations, two sub-bodies 120 are respectively selected to be combined, for example, the first sub-body is selected to be the drainage channel 102 combined up and down, and the second sub-body is.
When the sub-bodies 120 work independently, the underwater movement can be realized through the two combined underwater propelling devices 103, and after the two sub-bodies 120 are constructed into the complete shell 100, each group of the drainage channels 102 opposite to each other on the sub-bodies 120 can be communicated, so that the four underwater propelling devices 103 are respectively positioned in one group of the communicated drainage channels 102 to work.
As shown in fig. 10, the contact surfaces of the two sub-bodies 120 are provided with a structure portion, wherein the structure portion of one sub-body 120 is a male head 121, and the structure portion of the other sub-body 120 is a corresponding female head 122, and the two parts are matched to complete the structure. The arrangement of the underwater propulsion device 103 and the tail wing 101 can provide better conditions for positioning the structural part, and is convenient for adjusting the matching angle of the male head 121 and the female head 122.
In this embodiment, the transmission channel in the housing 100 is also a wireless communication transmission channel, and the contact surfaces of the two sub-bodies 120 are provided with communication holes 123 for data communication after the two sub-bodies are assembled.
Preferably, the assembly method in this embodiment is magnetic assembly, the female head 122 is provided with a magnetic device 124, the male head 121 is fixedly installed with a magnetizer 125, when the magnetic device 124 is powered on to work, the female head 122 generates magnetic attraction to attract the magnetizer 125 in the male head 121, and finally the male head 121 and the female head 122 are matched to complete the assembly.
The magnetic attraction device 124 can be a combination of a motor connected with a rotating magnet, and when the motor works electrically, the rotating magnet obtains magnetic force along with rotation, thereby attracting magnetic conductors such as iron cores.
As shown in fig. 11, the internal structure of the single sub-body 120 in this embodiment is similar to the housing 100 in the first embodiment, a waterproof chamber 110 is disposed in each sub-body 120, the waterproof chamber 110 includes a communication chamber 111 and a power supply chamber 112, and the communication chamber 111 is located at an end of the sub-body 120.
Each communication chamber 111 is provided with a group of visible light underwater transceiver modules 200, the power supply chamber 112 is provided with a power supply 400, and the power supply 400 supplies power to the visible light underwater transceiver modules 200 and the magnetic attraction device 124.
Preferably, in the present embodiment, similarly to the first embodiment, the cradle head support 500 is disposed on the inner wall of the communication chamber 111, and the visible light underwater transceiver module 200 is fixedly mounted on the cradle head support 500;
the pan/tilt support 500 is provided with a horizontal rotation mechanism 510 and a vertical rotation mechanism 520 for horizontally rotating and vertically rotating the visible light underwater transceiving module 200, respectively.
Preferably, an image capturing device 600 is further installed in each communication room 111 in the present embodiment, and is used for capturing an image outside the housing 100. The collected underwater image data can be transmitted to an upper computer through visible light communication so as to realize the function of collecting data underwater in the embodiment.
The two sets of visible light underwater transceiver modules 200 in this embodiment have the same design, and each include a visible light underwater receiving unit 210 and a visible light underwater transmitting unit 220, and optical paths of the visible light underwater receiving unit 210 and the visible light underwater transmitting unit 220 face the outside of the housing 100 and are independent of each other.
The visible-light underwater receiving unit 210 includes a receiving optical system 211, a photoelectric conversion mechanism 212, and a receiving circuit 213, which are arranged in this order in the photoelectric transmission direction, wherein:
the receiving optical system 211 is used for receiving optical signals, and mainly converges light reaching a receiving end, and the converged light impinges on a receiving photodiode (i.e., the photoelectric conversion mechanism 212) as much as possible, so that under the same underwater absorption and scattering condition, the loss of light beam energy can be reduced, and the effective transmission distance is longer. The receiving optical system 211 is generally composed of a circular optical glass convex lens and a properly focused receiving structure.
The photoelectric conversion mechanism 212 is used to convert an optical signal into an electrical signal, and a common photoelectric conversion mechanism 212 is a photodiode, and can be configured as a single photodiode or a photodiode array as required to meet communication conditions.
The receiving circuit 213 is used for outputting the electrical signals in a communication data format, and mainly comprises a signal receiving amplifying circuit, an STM32 processing circuit and a power supply circuit, wherein the signal receiving amplifying circuit is used for amplifying weak optical and electrical signals so as to facilitate the effectiveness of subsequent data processing, the STM32 processing circuit receives and processes the amplified digital signals, and then transmits data with remote communication equipment through the cable 300, and the power supply circuit is connected with the power supply 400 and supplies power to the signal receiving amplifying circuit and the STM32 processing circuit.
The visible light underwater transmitting unit 220 includes a transmitting circuit 221, a transmitting light source 222, and a collimating optical system 223 that are sequentially arranged along a photoelectric transmission direction, wherein:
the transmitting circuit 221 is configured to acquire communication data and analyze the communication data into an electrical signal, and mainly includes an LED driving circuit, an STM32 processing circuit, and a power supply circuit, where the STM32 processing circuit and the power supply circuit may be shared with the STM32 processing circuit and the power supply circuit of the receiving circuit 213, and only need to be correspondingly provided as a part of the LED driving circuit, and the LED driving circuit converts the data signal into a form that can be processed by an LED light source.
The light emitting source 222 is used for converting the electrical signal into an optical signal, and is typically a light emitting diode, and as such, may be a single light emitting diode or an array of light emitting diodes as required to satisfy the communication condition.
The collimating optical system 223 is used to release the optical signal as collimated light, so as to reduce the divergence angle of the light beam in free space transmission and to transmit the light beam in parallel light in free space as much as possible. The collimating optical system 223 is generally composed of a circular optical glass convex lens and an emitting structure with a proper focal length.
Each set of visible light underwater transceiver module 200 is further provided with a wireless communication unit for wireless communication between the two.
The visible light underwater transceiver module 200 further includes a data processor, a first data input end of the data processor is connected to the output end of the receiving circuit 213, a second data output end of the data processor is connected to the input end of the transmitting circuit 221, a data collecting end of the data processor is connected to the output end of the image collecting device 600, and the first data output end and the second data input end of the data processor are respectively connected to the data input end and the data output end of the wireless communication unit.
Through the design, this embodiment can be in separation and combination under water, each daughter 120 can both realize the underwater motion function and the visible light communication function as in embodiment one during separation alone, can realize the transmission relay function as in embodiment two during combination again, receive the visible light signal by the visible light underwater receiving unit 210 of one side, intercom exports the visible light underwater transceiver module of opposite side, send the visible light signal by the visible light underwater sending unit 220 of this module again, form the transmission function of visible light communication, when a plurality of visible light underwater transceiver modules form the route, very big extension communication distance, also can deal with more scene demands.
Example five:
referring to fig. 12, the present embodiment provides an underwater visible light communication transceiver module, including: the housing 100 and the housing 100 are bent at 90 degrees, two bent ends of the housing are respectively provided with a group of visible light underwater transceiver modules 200, the two groups of visible light underwater transceiver modules 200 communicate through a transmission channel in the housing 100, and the transmission channel communication can be wired transmission or wireless transmission. Both ends of the present embodiment are bullet-shaped, and the chamber walls of the ends are made of transparent material.
As shown in fig. 13, the internal structure of the present embodiment is similar to that of the present embodiment, a waterproof chamber 110 is disposed in the housing 100, the waterproof chamber 110 includes a power supply chamber 112 and two communication chambers 111, and the two communication chambers 111 are disposed at two ends of the housing 100, except that the power supply chamber 112 is bent at 90 °.
Each communication chamber 111 is provided with a group of visible light underwater transceiver modules 200, and the power supply chamber 112 is provided with two power supplies 400, wherein the power supplies 400 supply power to the visible light underwater transceiver modules 200.
Preferably, in the present embodiment, the cradle head support 500 is disposed on the inner wall of the communication chamber 111, and the visible light underwater transceiver module 200 is fixedly mounted on the cradle head support 500;
the pan/tilt support 500 is provided with a horizontal rotation mechanism 510 and a vertical rotation mechanism 520 for horizontally rotating and vertically rotating the visible light underwater transceiving module 200, respectively.
The two sets of visible light underwater transceiver modules 200 in this embodiment have the same design, and each include a visible light underwater receiving unit 210 and a visible light underwater transmitting unit 220, and optical paths of the visible light underwater receiving unit 210 and the visible light underwater transmitting unit 220 face the outside of the housing 100 and are independent of each other.
The visible-light underwater receiving unit 210 includes a receiving optical system 211, a photoelectric conversion mechanism 212, and a receiving circuit 213, which are arranged in this order in the photoelectric transmission direction, wherein:
the receiving optical system 211 is used for receiving optical signals, and mainly converges light reaching a receiving end, and the converged light impinges on a receiving photodiode (i.e., the photoelectric conversion mechanism 212) as much as possible, so that under the same underwater absorption and scattering condition, the loss of light beam energy can be reduced, and the effective transmission distance is longer. The receiving optical system 211 is generally composed of a circular optical glass convex lens and a properly focused receiving structure.
The photoelectric conversion mechanism 212 is used to convert an optical signal into an electrical signal, and a common photoelectric conversion mechanism 212 is a photodiode, and can be configured as a single photodiode or a photodiode array as required to meet communication conditions.
The receiving circuit 213 is used for outputting the electrical signals in a communication data format, and mainly comprises a signal receiving amplifying circuit, an STM32 processing circuit and a power supply circuit, wherein the signal receiving amplifying circuit is used for amplifying weak optical and electrical signals so as to facilitate the effectiveness of subsequent data processing, the STM32 processing circuit receives and processes the amplified digital signals, and then transmits data with remote communication equipment through the cable 300, and the power supply circuit is connected with the power supply 400 and supplies power to the signal receiving amplifying circuit and the STM32 processing circuit.
The visible light underwater transmitting unit 220 includes a transmitting circuit 221, a transmitting light source 222, and a collimating optical system 223 that are sequentially arranged along a photoelectric transmission direction, wherein:
the transmitting circuit 221 is configured to acquire communication data and analyze the communication data into an electrical signal, and mainly includes an LED driving circuit, an STM32 processing circuit, and a power supply circuit, where the STM32 processing circuit and the power supply circuit may be shared with the STM32 processing circuit and the power supply circuit of the receiving circuit 213, and only need to be correspondingly provided as a part of the LED driving circuit, and the LED driving circuit converts the data signal into a form that can be processed by an LED light source.
The light emitting source 222 is used for converting the electrical signal into an optical signal, and is typically a light emitting diode, and as such, may be a single light emitting diode or an array of light emitting diodes as required to satisfy the communication condition.
The collimating optical system 223 is used to release the optical signal as collimated light, so as to reduce the divergence angle of the light beam in free space transmission and to transmit the light beam in parallel light in free space as much as possible. The collimating optical system 223 is generally composed of a circular optical glass convex lens and an emitting structure with a proper focal length.
The group of visible light underwater transceiver modules 200 further includes a data processor, a first data input end of the data processor is connected to an output end of the receiving circuit 213 of the first visible light underwater transceiver module, a first data output end of the data processor is connected to an input end of the transmitting circuit 221 of the second visible light underwater transceiver module, a second data output end of the data processor is connected to an input end of the transmitting circuit 221 of the first visible light underwater transceiver module, and a second data input end of the data processor is connected to an output end of the receiving circuit 213 of the second visible light underwater transceiver module.
Through the above design, in this embodiment, the first visible light underwater transceiver module on one side receives the visible light signal through the visible light underwater receiving unit 210, the internal communication outputs the visible light signal to the second visible light underwater transceiver module on the other side deflected by 90 degrees, and the visible light underwater transmitting unit 220 of this module transmits the visible light signal to form the turning and transmitting functions of the visible light communication, it is expected that 90 degrees in this embodiment is only preferable, and the deflection angle can be designed according to actual requirements.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment. And the above embodiments may be combined or combined arbitrarily.
It can be appreciated by those skilled in the art that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (6)
1. An underwater visible light communication transceiver module, comprising: the underwater visible light transceiver module comprises a shell (100), wherein each end of the shell (100) is provided with a group of visible light underwater transceiver modules (200), each visible light underwater transceiver module (200) comprises a visible light underwater receiving unit (210) and a visible light underwater transmitting unit (220), and light paths of the visible light underwater receiving unit (210) and the visible light underwater transmitting unit (220) face the outside of the shell (100) and are independent of each other;
the two groups of visible light underwater transceiver modules (200) are communicated through a transmission channel in the shell (100), and the transmission channel in the shell (100) is a wireless communication transmission channel;
the shell (100) is formed by assembling at least two separable sub-bodies (120), wherein a group of visible light underwater transceiver modules (200) are respectively arranged in the two sub-bodies (120) at the end parts;
the contact surfaces of two adjacent sub-bodies (120) are provided with a construction part, wherein the construction part of one sub-body (120) is a male head (121), the construction part of the other sub-body (120) is a corresponding female head (122), and the two parts are matched to complete construction;
the female head (122) is provided with a magnetic attraction device (124), and the male head (121) is fixedly provided with a magnetizer (125);
the outer wall of each sub-body (120) is provided with four groups of drainage channels (102) communicated with the tail end of the shell (100), the two groups of drainage channels (102) on the opposite sides are combined, and the adjacent two sub-bodies adopt the drainage channels (102) with different combinations for installing the underwater propulsion device (103).
2. The underwater visible light communication transceiver module according to claim 1, wherein the underwater visible light receiving unit (210) includes a receiving optical system (211), a photoelectric conversion mechanism (212), and a receiving circuit (213) which are arranged in this order along a photoelectric transmission direction, wherein:
the receiving optical system (211) is used for receiving an optical signal, the photoelectric conversion mechanism (212) is used for converting the optical signal into an electric signal, and the receiving circuit (213) is used for outputting the electric signal in a communication data format;
the visible light underwater transmitting unit (220) comprises a transmitting circuit (221), a transmitting light source (222) and a collimating optical system (223) which are sequentially arranged along a photoelectric transmission direction, wherein:
the transmitting circuit (221) is configured to acquire communication data and analyze the communication data into an electrical signal, the transmitting light source (222) is configured to convert the electrical signal into an optical signal, and the collimating optical system (223) is configured to release the optical signal as collimated light.
3. The underwater visible light communication transceiver module of claim 2, wherein the underwater visible light communication transceiver module (200) further comprises a data processor, a first data input of the data processor is connected to the output of the receiving circuit (213), and a second data output of the data processor is connected to the input of the transmitting circuit (221).
4. The underwater visible light communication transceiver module according to claim 1, wherein a waterproof bin (110) is disposed in the housing (100), the waterproof bin (110) comprises a communication chamber (111) and a power supply chamber (112), the visible light underwater transceiver module (200) is installed in the communication chamber (111), a power supply (400) is installed in the power supply chamber (112), and the power supply (400) supplies power to the visible light underwater transceiver module (200);
the communication chamber (111) is located at the end of the shell (100), and the chamber wall is made of light-transmitting materials.
5. The underwater visible light communication transceiver module according to claim 4, wherein the inner wall of the communication chamber (111) is provided with a cradle head support (500), and the visible light underwater transceiver module (200) is fixedly mounted on the cradle head support (500);
the holder support (500) is provided with a horizontal rotating mechanism and a vertical rotating mechanism, and the horizontal rotating mechanism and the vertical rotating mechanism are used for horizontally rotating and vertically rotating the visible light underwater transceiving module (200).
6. The underwater visible light communication transceiver module of claim 4, wherein an image acquisition device (600) is further installed in the communication chamber (111) for acquiring an image outside the housing (100).
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| CN113644976B (en) * | 2021-09-09 | 2023-06-30 | 重庆前卫科技集团有限公司 | Underwater visible light communication system |
| CN113783617B (en) * | 2021-09-09 | 2023-04-07 | 重庆前卫科技集团有限公司 | Long-endurance underwater visible light communication device |
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| CN108429588A (en) * | 2018-03-26 | 2018-08-21 | 四川久久合创信息技术有限公司 | A kind of underwater communications system |
| CN207968497U (en) * | 2018-04-12 | 2018-10-12 | 中国人民解放军战略支援部队信息工程大学 | A kind of underwater visible light communication system |
| CN209881793U (en) * | 2019-08-19 | 2019-12-31 | 重庆前卫科技集团有限公司 | Underwater visible light communication device |
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| US9490910B2 (en) * | 2013-03-15 | 2016-11-08 | Fairfield Industries Incorporated | High-bandwidth underwater data communication system |
| CN109728858A (en) * | 2019-01-11 | 2019-05-07 | 中国石油大学(北京) | Underwater multidirectional laser communication device |
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| CN108429588A (en) * | 2018-03-26 | 2018-08-21 | 四川久久合创信息技术有限公司 | A kind of underwater communications system |
| CN207968497U (en) * | 2018-04-12 | 2018-10-12 | 中国人民解放军战略支援部队信息工程大学 | A kind of underwater visible light communication system |
| CN209881793U (en) * | 2019-08-19 | 2019-12-31 | 重庆前卫科技集团有限公司 | Underwater visible light communication device |
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